UNABLE TO ADD VIRTUA BANKGROUND OR BLUR MY SCREEN

Hi MZ3

In order for the background function to be able to be used without the need for a green screen or uniform background (a single color) it is necessary that your computer equipment meets some processor requirements.

You can see more information at this link: https://support.zoom.us/hc/en-us/articles/210707503-Changing-your-Virtual-Background-image

How do I add the tab 'video filters'?  It disappeared.

First check if you have updated your Zoom application and then you can enter the user settings web portal to check if the box for that function is active.